Apparatus for forming containers from fibrous substances.



w. s. REA. APPARATUS FOR FORMING CONTAINERS FROM FIBRQUS SUBSTANCES.

APPLICATION FILED JUNE 21, 918.

Patented Sept. 24, 1918;

M INVENTOR W/LL/FIM ELREH A TTORNE Y i it qmia

UNITED STATES PATENT OFFIC.

WILLIAM s. REA, or SAN FRANCISCO, CALIFORNIA.

' APPARATUS FOR FORMING CONTAINEIR. S FROM FIBROUS SUBSTANCES.

To ell-whom it may concern i Be'it known that I, WVILLIAM S.- REA, .a

citizen of the United States, and a resident of the city and county of San Francisco and State of California, have invented an Improvementin Apparatus for Forming Con-.

tainers from Fibrous Substances; and I do hereby declare the following to be. a full, clear, and exact description of my lnvention, such as will'enable others skilled-in theart to which it appertains to make and use'the same.

Y This invention relates to an apparatus for forming containers from fibrous materials,

suchas wood or paper pulp and the like; and it consists in the novel construction,

combination, and arrangement of parts-as hereinafter described and later claimed.

The object of my invention is toprov de an apparatus, which, by reason of its ;s1m-. plicity of construction and mode of opera.- tion, will make possiblethe-manufacture of such containers with rapidity and accuracy,

and at a low manufacturing cost;

In order that my invention may be clearly understood and readily carried into effect, the same isdescribed with reference tothe accompanying drawings, in which similar numerals indicate like parts: 1

Figure 1, is a view of the pulp mixture trough. 12

Fig. 2, is an elevation of the device in closed position,the mold portion thereof being in section. v

Fig. 3, is a side elevation of Fig. 2,1001:- ing from the right.

Fig. 4, is a detail showing mounting of porous mold.

In detail, my constructlon is as follows:

The fibrous pulp to be converted into condinal bands, 6, rigidly affixed by means of I inwardly projecting lugs, 7, to the semi-cir- S pecification of Letters Patent. Patented Sept. 24, 1918. Application filed June 21,1918. I serial No. 241,252.-

*cular jawsfof a tong like portable frame comprised of two parts, 8 and 9, pivotally held together by the pivot-pin ll, engaging the slots, 10. Y Said frame is provided with handles, .12 and v13.. Said bands, 6, are sharply tapered at their point of contact withthemold sections in order to avoidob- .structing the poresin the mold as little as possible. Between the parts, 8 and 9, of the frame'is mounted ;a fcompression spring, 14, which causes the mold to stand slightly open when not in use because of the play afforded by the slots, 10, whichengage the said pivot- .pin,,1l. I

' Parallel with the handle, 13, and attached thereto by means of-clamps,,15,.is a flexible pipe, 16, connecting at the rear with a 'suitable air-compressor (not shownain'the drawingslan'd adaptedto be receivedby a nozzle, -17,.suitably mounted on the right-hand jaw .of said frame- The said nozzle opens into said mold through the boss, 18, supported by one ofsaid bands,'6. By means of a trigger, 19, Ioperate the quick-acting valve, 20, which controls the supply of compressed air admitted into'the mold during the forma tion therein of the said containers.

My apparatus is operated as follows: Pulp having been prepared in the trough, the operator opens the porous mold carried by the portable frame by forcing the handles apart; 'hethen dips the open mold into the pulp mixture and fills the same with saidmixture by pressing the handles together thereby closing the mold. The mold thus filled is thenraised and held ina closed position by pressure exerted against the handles by the operator. He then operates the trigger valve and establishes connection between the mold and the air compressor. The force imparted by the compressed air thus let into the mold through the flexible pipe forces the pulp held in the mold against the inner surfaces of the porous mold in an even layer. The air also forces the water held in the moistened pulp mixture out through the pores in the mold surface. The air is then shut off by releasing the trigger. As the operator opens the mold preparatory to discharging the container thus produced, the action of the compression. springforces the two sides of said mold. slightly apart by reason of the play afforded by the slots in the said frame, and in manner any pulp particles in the finished container which may have become embedded in the openings of the porous mold during the time of its construction are dislodged from the said mold.

Having thus described my invention, What I desire to claim and to secure by Letters Patent, is:

1. In an apparatus of the character described, a portable frame consisting of sections pivoted together at their central pormounted on frame and adapted to open and close, and means for operating the same.

3. In an apparatus of the character described, a separable porous mold suitably mounted on a portable tong-like frame, a flexible pipe-line for compressed air opening into said mold, and means for dislodging finished containers from said mold.

4. In an apparatus of the-character'described, a separable porous mold suitably mounted on a portable tongdike frame, a valve-controlled flexible pipe-line for compressed air opening into said mold, and means. for discharging finished containers from said mold.

5. In an apparatus of the character described, a portable frame comprised of sections pivoted together at their central ortions, a separable porous .mold mounte on said frame, said mold being adapted for the formation therein of containers by means of compressed air exerted against a mixture of moistened pulp held in said mold, means for opening and closing said mold, and means for dislodging and discharging the finished containers from saidmold.

6. In an apparatus for forming containers from fibrous substances by the action of compressed air, a portable frame comprised of sections pivoted together, a separable porous mold mounted on said frame, means for admitting air under compression into said mold, and means for discharging the finished containers.

In testimony whereof I have hereunto affixed my signature.

WILLIAM S. REA. 

